Motor-oscillated crib.



W. F. SILL & l. M. FELDHAUS. MOTOR OSCILLATED CRIB. APPLlcATloN minDEc.23. |916.

1,231,078.- Pateted June 26, 1917.

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WILLIAM F. SILL AND JOI-IN M. FELDHAUS, 0F ST. LOUIS, MISSOURI;

IVIOTOR-OSCILLATED CRIB.

l Specification of-Letters Patent.

PatentedJ une 26, 191'?.

Application filed December 23, 1916. Serial No. 138,645.

To all whom it may concern:

Be it known that we, WJ'LLIAM F. SILL andv JOHN M. FELDHAUS, citizens ofthe United States, residing at St. Louis, in the county v offSt. Louisand State of Missouri, have invented certain new and useful Improvementsin Motor-Oscillated Cribs, of which the following is a specification,reference being had of the crib may bevreadily controlled andkregulated. p

@ther objects` willa-ppear in the course of the following description. l

Ourinvention i's illustrated in the accompanying drawings, wherein-.-

Figure 1 is a front elevation of the crib, the motor compartment beingbroken away to show the motor;-

Fig. 2' is a section on the line 2 2 ofy Fig. 1; f y

Fig. 3 is aside elevation of-'the speed controlling device, the shaftbeingy shown in section;

Fig. 4 is a perspective view of one of the tracks .on the bottom of' thecrib andthe adjacent-end of the connecting rod;

Fig. 5. is a perspective. view of. the. cam for operating the speedcontrolling device.

Referring to. these figures. it f will bey seen that ourimprovedjcribincludes a base designated generally 10, the basebeingsupportedy uponzlegs 11.*y and 'having the oppositelydisposed upwardly7extending. standards 12 which-.may be made? of anyy desired-'ornamental:design. Mounted .between thestandards isfthe cribproper designated 13andA having atits= .ends the outwardly extending pivotsy 14engagingjournal; bearings 115; mounted;

upon the standards. The crib may be 0f any ornamental form orconfiguration and, as illustrated, is about 18 inches deep and anydesired width. Disposedabove the base 10and inclosed-within a suitablecasing 16 is a spring motor. This spring motor is designed to takel uphalf the length of the casing 16, the other half' of the length ofthecasing forming a compartment which may constitute awardrobe'forinstance, this half of the casing'beingV closedby a door 17.The

motor, as before stated, is contained within the other halfof'the-ca-singandthe motor compartment is closed by a door 18, thesedoors beingA hinged tothe end walls of the casing. 1

The motor for rocking the crib comprises a shaft 19 supported insuitable bearings 20 and surrounding one endv of this shaft isl a drum2l, this drum being rotatably mountedr with'relation tothe shaft andinclosed within the drum' is a coilspring 22, oneend of which isattached to the shaft and the other end of'which is attached tothe drum.Thedrum isprovided upon its exterior face at its center with anoutwardly projecting hub 23 formed with teeth uponits extremity forengagement with a crank handle. The periphery ofthe drum is also formedwith notches 24E and a spring pawl 25 suitably mounted engages thesenotches and prevents a reverse rotation of thev drum. It will be obviousnow th'ata rotation of the drum in one directionwilf'l windlup'thespring andv that a reverseV rotation of the drum will be prevented bythespring -pawl 25. EXtend ing {parallel to the shaft 19 is a counter crankshaft-26 having thereon the cranks 27 and 28; This crankshaft is mountedin suitable bearings 29- A. relatively large gear wheel I 30 ismountedupon the'shaft 19 and engages with a relatively smallgearwheelf31 mounted'upon the crankshaft 26. It will be obvious,therefore, that the rotative power of thespring will be transmitted tothe counter crank shaft. The cranks 27 and 28'carry uponthemth'econnecting rods 32, theseconnecting rods extending upwardand carrying attheir upper ends the pairs ofi rollers 33 which engage with tracks 34mounted upon the-undery side'ofthe/ crib proper-13. It will' thus beobvious that a rotation of the shaft 26 will cause an oscillation of thecrib and that the rapidity of this oscillation will depend upon thespeed of rotation of the crank shaft. For the purpose of regulating thespeed of rotation of the crank shaft and, therefore, the speed ofoscillation of the crib, 1 provide a controller which is adapted to beoperated or regulated from the exterior of the casing within which themotor is disposed, this controller comprising oppositely disposedmembers 35 and 36 pivoted or bolted to each other atl one end, thesemembers being preferably of wood. These members extend on each side ofthe crank shaft and are formed with semi-circular seats 36a whichembrace the crank shaft. These seats are preferably lined with rubber orlike material. Passing through the free ends of the members 35 and 36 isa rod 37 and disposed on this rod are the springs 372L which bearagainst the free ends of the members 35 and 36 and resiliently forcethem against the crank shaft. These members 35 and 36, therefore, act asbrakes impeding the rotation of the crank shaft to an extent dependingupon the strength of the springs and the frictional engagement betweenthe members 35 and 36 and the crank shaft. For the purpose of regulatingthe amount of this frictional engagement we provide a cam 38 formed upona rod 39 or shaft which shaft passes between the members 35 and 36. Theshaft is formed with la crank handle 4.0 whereby it may be rotated. 1twill be obvious now that when the cam is rotated in one direction itwill permit the springs 37a to force the members 35 and 36 withconsiderable braking power against the shaft and thus prevent the shaft.On the other hand, when the shaft 39 is rotated through a quarter of lacircle it will entirely lift the members 35 and 36' from engagement withthe crank shaft and the crank shaft will rotate unimpeded. Vhen the camshaft 39 is rotated partially it will partially separate the members 35and 36 and they will then only partially impede the rotation of thecrank shaft. Thus it is possible to entirely regulate the speed ofoscillation of the crib. The end of the casing within which the motor is-inclosed may beprovided with a scale over which the crank handle 40will operate so.

that the speed brakes may be adjusted with considerable nicety.

The operation of this invention will be obvious from what has gonebefore. Assuming the spring is wound up, then upon releasing themembers. 35 and 36 from their engagement with the crank shaft, thespring will cause the relatively slow rotation of the shaft 19 and therelatively more rapid rotation of the shaft 26 and the oscillation ofthe cribi By regulating the speed, the oscillarotation of the y rtionmay be very gentle or it may be made more rapid as desired.

The cranks 27 and 28 are disposed in opposite relation and it will beobvious that upon a rotation of the crank shaft, each one oftheconnecting rods 32 will move in a path having a vertical component and aslight horizontal component. For instance, assuming that the shaft 26 isrotating in a counterclockwise direction then the connecting rod 32 atthe righthand of Fig. 2, will move upward tilting or swinging the cribupon its pivot and moving along the slotted track 34k toward the outerend of the track. As the crank moves over to the lefthand side of Fig.2, the roller of the connecting rod will travel back along the slotuntil the crank commences to move downward, when the pull will bedirected downward and shift the crib in the other direction. The purposeo-f connecting the crib to the crank shaft by means of connecting rodshaving rollers moving in slots is to provide for a relatively gentlemovement of movement of the crib changes.

While we have illustrated the construction Y which we have found to bevery practical and which may be made very ornamental, yet it is obviousthat many modifications might be made in this device without'departingfrom the spirit of the invention.

Having described our invention, 'whatwe claim is: v

1. The combination with a swinging crib, of a motor, a shaft operativelyconnected to the motor and having 4oppositely disposed cranks,connecting rods extending from the crank shaft to the crib, the adjacentends of the connecting rods having sliding engagement with the crib.

2. The combination with a swinging crib, of means for oscillating thecrib comprising a crank shaft having'oppositely disposed cranks,connecting rods extending from the cranks to the crib, and havingrollers, and transversely extending tracks on the crib with which therollers engage.

3. In a structure of the character described, verticallyy extendingstandards, a crib disposed between said standards and having trunnionsoperatively supported by the standards, the trunnions being disposedabove the bottom of the crib, transversely extending tracks on thebottom of the crib, a motor driven crank shaft, and connecting rods.pivotally connected to the cranks of said shafts and having slidingengagement with said tracks.

4L. The combination with an oscillatory crib, of a spring motor thereforcomprising a, shaft, a driving spring operatively connected to theshaft, means for winding up the spring, a crank shaft, means for drivingthe crank shaft from the motor shaft, our signatures n the presence oftWo Witconnectlng rods extendlng rom the Crank nesses.

shaft, rollers carried upon the outer ends WILLIAM F. SILL. of theconnect-ing rods, and tracks on the JOI-IN M. FELDHAUS. bottom of thecrib with which said rollers I/Vitnesses: engage. FREDERICK IVOLKE,

In testimony whereof We hereunto affix CHARLES H. GARTHE.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, D. C.

